1. Downtown Tunnel Midtown Tunnel MLK Extension Downtown Tunnel Midtown Tunnel MLK Extension Virginia Maritime Association U.S. Army Corps of Engineers Hampton Roads Navigational Summit April 4, 2012 Virginia Maritime Association U.S. Army Corps of Engineers Hampton Roads Navigational Summit April 4, 2012

2. 4/4/2012 Slide 2 Hampton Roads Navigational Summit Project Team

3. Project Scope 4/4/2012 Slide 3 Hampton Roads Navigational Summit A new, two-lane tunnel Refurbishment and safety improvements Extending MLK to I- 264, High St. interchange

4. New MTT Alignment 4/4/2012 Slide 4 Hampton Roads Navigational Summit

5. New MTT Profile 4/4/2012 Slide 5 Hampton Roads Navigational Summit

6. Typical Tube Section 4/4/2012 Slide 6 Hampton Roads Navigational Summit

7. Marine Operations Dredging Screeding Tube Placement Security Fill Ordinary Fill Armor Stone/Rock Blanket 4/4/2012 Slide 7 Hampton Roads Navigational Summit

8. Clamshell Dredging 4/4/2012 Slide 8 Hampton Roads Navigational Summit

9. Screed Barge 4/4/2012 Slide 9 Hampton Roads Navigational Summit

10. 4/4/2012 Slide 10 Hampton Roads Navigational Summit Screed Operation

11. Tube Placement 4/4/2012 Slide 11 Hampton Roads Navigational Summit

12. Tube Placement 11 Tube Elements Each approx 350 ft long Portsmouth to Norfolk 4/4/2012 Slide 12 Hampton Roads Navigational Summit

13. Screed Set #1 4/4/2012 Slide 13 Hampton Roads Navigational Summit

14. Screed Set #2 4/4/2012 Slide 14 Hampton Roads Navigational Summit

15. Screed Set #3 4/4/2012 Slide 15 Hampton Roads Navigational Summit

16. 4/4/2012 Slide 16 Hampton Roads Navigational Summit

17. 4/4/2012 Slide 17 Hampton Roads Navigational Summit

18. 4/4/2012 Slide 18 Hampton Roads Navigational Summit

19. Marine Ops – Linear Schedule 4/4/2012 Slide 19 Hampton Roads Navigational Summit

20. Marine Ops – Linear Schedule 2013 4/4/2012 Slide 20 Hampton Roads Navigational Summit

21. Marine Ops – Linear Schedule 2014 4/4/2012 Slide 21 Hampton Roads Navigational Summit

22. Marine Ops – Linear Schedule 2015 4/4/2012 Slide 22 Hampton Roads Navigational Summit

23. Summary of Discussions To Date Total Channel Closures (12 each – 48 hr) Partial Channel Closures (Maintain 220 ft) Marine Operations Coordinator Notice to Mariners Emergency Situations Good Communication 4/4/2012 Slide 23 Hampton Roads Navigational Summit

24. 4/4/2012 Slide 24 Hampton Roads Navigational Summit